An accurate fatigue damage model for welded joints subjected to variable amplitude loading

Aeran, Ashish; Siriwardane, Sudath C.; Mikkelsen, Ove; Langen, Ivar

doi:10.1088/1757-899x/276/1/012038

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…One lane loading is analysed and obtained load distribution factor to exterior and interior girders are 0.55 and 0.14 respectively. The calculation of the nominal stress ranges of exterior girder involves multiplying the highest response by the distribution factor and the dynamic amplification factor of 1 [12,16]. The result is then divided by the related section modulus of DIP 95 (corroded/uncorroded condition).…”

Section: Stress Evaluationmentioning

confidence: 99%

An approach for fatigue life assessment of a road bridge based on measured corrosion and actual traffic loading

Gebremeskel,

Cruz,

Adasooriya

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Fatigue and corrosion play a significant role in the aging of steel bridges, especially in a marine environment. An absence of fatigue strength curves for details which are exposed to corrosive environments, realistic traffic load models and accurate damage accumulation models increase the susceptibility of fatigue damage of steel bridges. In this paper, remaining fatigue life of a road bridge is assessed based on the measured corrosion wastage and more realis-tic traffic loads. Corrosion fatigue is also studied as it is one of the main factors that reduce the fatigue life and recently proposed fatigue strength curve for structural details exposed to corrosive environments is utilized for this study. A non-linear fatigue damage accumulation model is used for life assessment apart to the conventional damage model, Miner’s rule. The calculated fatigue lives are compared and discussed in quantitative manner to identify the most conservative remaining life and corresponding methods.

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Section: Stress Evaluationmentioning

confidence: 99%

An approach for fatigue life assessment of a road bridge based on measured corrosion and actual traffic loading

Gebremeskel,

Cruz,

Adasooriya

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…In 2017, Aeran et al [42,43] expressed the need for a model that is based on commonly available S-N curves. They reasoned that none of the available models at that time were readily applicable because they require the determination of extra material parameter(s) or a modification of the S-N curve.…”

Section: Nonlinear Damage Accumulation Models Based On the S-n Curvementioning

confidence: 99%

Cumulative Damage and Life Prediction Models for High-Cycle Fatigue of Metals: A Review

Hectors

Waele

2021

Metals

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Fatigue design of engineering structures is typically based on lifetime calculation using a cumulative damage law. The linear damage rule by Miner is the universal standard for fatigue design even though numerous experimental studies have shown its deficiencies and possible non-conservative outcomes. In an effort to overcome these deficiencies, many nonlinear cumulative damage models and life prediction models have been developed since; however, none of them have found wide acceptance. This review article aims to provide a comprehensive overview of the state-of-the art in cumulative damage and lifetime prediction models for endurance based high-cycle fatigue design of metal structures.

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“…Aeran et al demonstrated the importance of a model which is based on the commonly available S-N curves. 33,34 This arose from the perspective that several damage models, depending on additional material parameters, had been proposed. This, in turn, resulted in the models not being readily applicable.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear fatigue life prediction model based on the theory of the S‐N fatigue damage envelope

Bjørheim

Pavlou

Siriwardane

2022

Fatigue Fract Eng Mat Struct

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A nonlinear model is proposed in light of the theory of isodamage curves, to assess the cumulative fatigue damage under multistage loading. The isodamage curves were developed through the theory of the S-N fatigue damage envelope, proposed by Pavlou. The adopted functional form of the fatigue damage is a commonly accepted general form. In the present work, a stress function for the fatigue life exponent is derived with the aid of the S-N curve only. In the proposed nonlinear model, no adjusting parameters are necessary for fatigue damage estimation. The fatigue life prediction of the derived model is compared with experimental results of various alloys and existing models.

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An accurate fatigue damage model for welded joints subjected to variable amplitude loading

Cited by 6 publications

References 23 publications

An approach for fatigue life assessment of a road bridge based on measured corrosion and actual traffic loading

An approach for fatigue life assessment of a road bridge based on measured corrosion and actual traffic loading

Cumulative Damage and Life Prediction Models for High-Cycle Fatigue of Metals: A Review

Nonlinear fatigue life prediction model based on the theory of the S‐N fatigue damage envelope

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